Snow White

Snow White is the mother of Emma Swan. Before she was royal, she used to be a thief hiding from her step mother, the evil queen who wanted to kill her because "Snow ruined her life".

 HOW SHE MET PRINCE CHARMING/JAMES/DAVID 

James was in a carriage with his fiancée. The carriage breaks down and James goes out to see what happened. Snow breaks in and steals his ring. She runs into the woods. Her intention is to sell the ring and other things she stole, for a safe passage away from the enchanted forest to escape the wrath of the queen. James sets a trap in the woods to capture her.